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This is a simple class that solves Sudoku puzzles using recursive backtracking. There are 3 puzzles included for demonstration purposes. To run the program you simply pass in the name of a puzzle file you want to solve: > make > ./Sodoku puzzle.txt In the puzzle template files blank spots are represented by underscores, "_". A line return is also required after each sequence of 9 characters representing rows in the puzzle. Here is an example file: _1_4____2 __4_72___ _83__5_7_ _382_7___ _521_483_ ___5_372_ _2_3__94_ ___72_6__ 9____6_1_